class MASKING_DLL_DECLSPEC Slider

The slider widget.

Inheritance:

Slider - Progress - Separator - Widget - Rect

Public Methods

void SetOrientation(int o)

Sets the orientation of the slider.

void SetBitmap(int background, int button)

Sets the sliders skin bitmaps.

void Setup(int x, int y, int w, int h, int key, int flags, int m, int M, int p, int o)

A shortcut for Widget::Setup(), ScrollObject::SetRange(), ScrollObject::SetPosition() and SetOrientation()

Protected Fields

int bitmap[2]

Two indices pointing to the slider bitmaps in the skin's bitmap arrays

int offset

The offset of the point on the gripper where the user grabbed it to drag from the centre

Protected Methods

void Draw(Bitmap &canvas)

Draws either a horizontal or a vertical slider

void MsgLPress()

void MsgLRelease()

void MsgMousemove(const Point &d)

void MsgWheel(int z)

These handle moving the slider button with the mouse

bool MsgChar(int c)

Handles keyboard input.

bool MsgWantfocus()

Returns true to indicate the slider takes input focus

void MsgInitSkin()

Initializes the slider with the default slider bitmaps

void DrawHorizontalSlider(Bitmap &canvas)

Helper function for drawing a horizontal slider

void DrawVerticalSlider(Bitmap &canvas)

Helper function for drawing a vertical slider

void Toggle()

A helper function for switching the state of the slider between normal and selected

Documentation

The slider widget. This is a simple slider that can be moved with both the mouse and the keyboard. Can be horizontal or vertical. Every time the position of the slider changes it sends a MSG_SCROLL message to the parent dialog passing the new position as the first argument.

int bitmap[2]

Two indices pointing to the slider bitmaps in the skin's bitmap arrays

int offset

The offset of the point on the gripper where the user grabbed it to drag from the centre

void Draw(Bitmap &canvas)

Draws either a horizontal or a vertical slider

void MsgLPress()

void MsgLRelease()

void MsgMousemove(const Point &d)

void MsgWheel(int z)

These handle moving the slider button with the mouse

bool MsgChar(int c)

Handles keyboard input. It enables moving the slider button with the keyboard. The slider can be moved by eithe left and right or up and down arrows (depending on orientation) and HOME and END keys.

bool MsgWantfocus()

Returns true to indicate the slider takes input focus

void MsgInitSkin()

Initializes the slider with the default slider bitmaps

void DrawHorizontalSlider(Bitmap &canvas)

Helper function for drawing a horizontal slider

void DrawVerticalSlider(Bitmap &canvas)

Helper function for drawing a vertical slider

void Toggle()

A helper function for switching the state of the slider between normal and selected

void SetOrientation(int o)

Sets the orientation of the slider. Pass 0 for vertical and 1 for horizontal.

void SetBitmap(int background, int button)

Sets the sliders skin bitmaps. Unlike most other widgets the slider uses two bitmaps instead of just one. It uses one for the background and another for the draggable button. The slider is automatically resized to the width or height of the background bitmap depending on orientation. The button bitmap is usually of the same width (or height) as the background bitmap although it may be smaller but it mustn't be bigger.

void Setup(int x, int y, int w, int h, int key, int flags, int m, int M, int p, int o)

A shortcut for Widget::Setup(), ScrollObject::SetRange(), ScrollObject::SetPosition() and SetOrientation()

This class has no child classes.

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